PSXtreme

open up your pc case and read the label on your current ram. Or check in the bios or some sh*t, but I don't know how to do that. So either open it up or wait for someone who knows what the f*ck they're talking about to come on here and post.

Samutz

I use www.crucial.com. You select the computer/motherboard brand and model (if you have a Dell or Gateway etc, look by computer brand, if it's custom builts look by motherboard). They tell you everything, such as what type of ram it holds, how much it can hold, how many slots you have, and so on.

bdww69

I would HOPE that being only 1.5 years old it's not still running Rambus RAM. It should either be PC2100 or PC3200 (533 MHz / 800 MHz FSB)

What speed is your CPU? That should also give us a good clue.

/\ he is right about the cpu-z program on cpuid.com and p4 fsb speeds but pc2100 is 266mhz ram pc2700 is 333 mhz ram pc3200ram is 400mhz and pc4000 is i think 500mhz

but the answer to the topic is it is recommended on athlon xp's to get a higher or equal ram speed to correspond with your fsb. your ram currently is probably pc2700 i would get either another 512mb stick of pc 2700 (or what cpu-z says) or upgrade to either pc 3200 (sold in most bestbuys or circuitcity's etc.) or even order from online 2x512 sticks of pc4000 (make sure mobo can support it).

chances are your mobo wont support pc4000 or maybe even pc3200 check with gateways support part on thier site